In an inflorescence, the main axis forms a cup-shaped receptacle with a small opening at the top, and the flowers are enclosed within the cup in cymose groups. The type of inflorescence in question is

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Q: 47 (IES/2002)
In an inflorescence, the main axis forms a cup-shaped receptacle with a small opening at the top, and the flowers are enclosed within the cup in cymose groups. The type of inflorescence in question is

question_subject: 

Science

question_exam: 

IES

stats: 

0,14,20,5,14,10,5

keywords: 

{'inflorescence': [0, 0, 2, 0], 'cymose groups': [0, 0, 1, 0], 'flowers': [5, 1, 4, 2], 'cyathium': [0, 0, 2, 0], 'hypanthodium': [0, 0, 2, 0], 'receptacle': [0, 0, 1, 0], 'main axis forms': [0, 0, 1, 0], 'small opening': [0, 0, 1, 0]}

The given question is asking about the type of inflorescence where the main axis forms a cup-shaped receptacle with a small opening at the top, and the flowers are enclosed within the cup in cymose groups. Let`s dissect each option to understand which one fits this description.

1. Cyathium: A cyathium inflorescence is characteristic of plants in the Euphorbiaceae family. It consists of a cup-like structure called the cyathium, containing several small flowers. However, this type of inflorescence does not have a small opening at the top, so it does not match the description given.

2. Hypanthodium: This type of inflorescence is found in plants of the Moraceae family, which includes the figs. It consists of a hollow, urn-shaped receptacle called the hypanthodium, with a small opening at the top. The flowers are enclosed within the hypanthodium. This matches the description given, so it could be the correct answer.

3. Umbel: An umbel inflorescence consists of several flowers arising from the same point at the top of the floral axis, giving a flat or rounded appearance. This type of inflorescence